Electro Mechanical Computers

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Overview

Mark I is the first electro-mechanical computer developed by Howard Aiken in 1937. There after many computers were invented. This note provide us an information about the series of Electro-Mechanical Computers invented after Mark I.
Electro Mechanical Computers

MARK-I

It is the first electro-mechanical computer developed by Howard Aiken in 1937. The machine was 5ft long, 3ft wide and 8ft high and used in 18000 vacuum tubes. The machine took 1 second to perform 3 mathematical calculations.

Atanasoff-Berry Computer (ABC )

In 1942, J.V. Atanasoff and Clifford Berry developed Atanasoff-Berry computer. It was developed to solve the simultaneous equation.

ENIAC (Electronic Numerical Integrator and Calculator)

In 1946, this machine was developed by John Mauchly and J. Presper Eckert. It used decimal number system for calculation. This machine can calculate 300 times faster than any other machine of that time. This machine was used in the military operation for firing ballistic missiles.

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EDSAC (Electronic Delay Storage Automatic Computer)

This machine was developed by Maurice Wilkes and his team in 1949. It had 3000 vacuum tubes and consumed 30KW of electric power.

EDVAC (Electronic Discrete Variable Automatic Computer)

This machine was developed by John Mauchly, John Presper Eckert with the assistance of John Von Neumann in 1952. This machine was the first machine that could store programs in it with the help of binary digits.

UNIVAC ( Universal Automatic Computer)

This machine was first developed by John Mauchly and J. Presper Eckert in 1951. This was the first computer developed for commercial use.

History of computer in Nepal

The computer was introduced in Nepal in 2028 B.S. It was introduced by His Majesty's Government for the population census of 2028 B.S. This was the second generation computer called IBM 1401. In 2039, B.S. microcomputer such as Apple, vector sins etc was imported by private companies and individuals. Nowadays, computers with faster processing and larger storage are found cheaply in Nepalese market. At present, Computer Association of Nepal (CAN) is the governing body of Nepal's computer field.

Things to remember
  • Mark-I is the first electro-mechanical computer developed by Howard Aiken in 1937.
  • In 1942, J.V. Atanasoff and Clifford Berry in 1942 developed Atanasoff-Berry computer.
  • EDVAC was developed by John Mauchlay, John Presper Eckert with the assistance of John Von Neumann in 1952.
  • UNIVAC was first developed by John Mauchlay and J. Presper Eckert in 1951. 
  • EDSAC was developed by Maurice Wilkes and his team in 1949. 
  • It includes every relationship which established among the people.
  • There can be more than one community in a society. Community smaller than society.
  • It is a network of social relationships which cannot see or touched.
  • common interests and common objectives are not necessary for society.
Videos for Electro Mechanical Computers
EDSAC
Running IBM 604, 1948 computer
The Atanasoff-Berry Computer In Operation
UNIVAC - Then and Now
Questions and Answers

History of the computer is based on mainly calculation devices. Therefore, it is classified into the following three eras:

  • Mechanical era.
  • Electro-mechanical era.
  • Electronic era.

Mark-I was the first electro-mechanical computer developed by Howard Aiken. It was named as ASCC and was 8 ft high, 51 ft long and 2ft wide. It used more than 7 lakh 50 thousand parts and weighed more than 32 tons.

Atanasoff-Berry computer was made to solve multiple equations at the same time.

Though Atanasoff-Berry computer was the best computer at that time it could not use decimal number system calculations. ENIAC was able to calculate using a decimal number system and was 300 times faster than Atanasoff-Berry computer.

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